Problems with pppd

[ejc]

On 2/2/06, YONETANI Tomokazu <qhwt+dfly at xxxxxxxxxx> wrote:
> On Tue, Jan 31, 2006 at 09:24:59PM -0600, ejc wrote:
> > I got a dump thanks to your excellent instructions.  It didn't tell me
> > much, but I saved it and uploaded kernel.0.gz and vmcore.0.gz to
> > http://www.crackpot.org/~ejc/dragonfly/
>
> Though my laptop has an RJ-11 port, I have no idea how I can make this
> on-chip modem work.  I need to find a real modem before I can dig in
> further.  In the meantime I looked at your kernel dump, and I think
> (IIUC) ppp driver has a serializer problem.  Can you try a kernel with
> the following options enabled(seems it's commented out now):
>   options INVARIANTS
>   options INVARIANT_SUPPORT
>
> and run the following command(as root) before running pppd and ping:
>   sysctl debug.trace_on_panic=1 debug.debugger_on_panic=1
> if my guess is right, you'll see a panic in lwkt_serialize_enter()
> (but it may be far before you run the ping command...).

I did this last night and have uploaded the files to 
http://www.crackpot.org/~ejc/dragonfly/

Out of curiosity, how does one view the coredump file and get stack
traces from it?
Thanks for your time and patience.

Eric